Taken in October 1988 by David Ross, the photos are expected to reach $1,900 each.

Photos: Vogue U.K.

"Kate was a cool character," Ross told Vogue U.K. "She seemed like a tough or resilient typical teenager, comfortably fronting me up, perhaps covering up her nerves. I suppose what was refreshing was that she was honest. She wasn't trying to prove anything or act above her station. She didn't try to adopt a model attitude of self-absorption and superiority, which at the time was becoming public via media sensation. She was untarnished. A blank canvas, as other writers have put it."